Structural Changes and Fate of Crystalloplastids during Growth of Calcium Oxalate Crystal Idioblasts in Japanese Yam (<i>Dioscorea japonica</i> Thunb.) Tubers

Kawasaki, Michio; Taniguchi, Masaru; Miyake, Hiroshi

doi:10.1626/pps.7.283

Cited by 8 publications

(6 citation statements)

References 19 publications

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“…Raphides, needle-like CaC 2 O 4 ·H 2 O crystals sharpened at both ends, have been identified as the irritant factor from plants such as Agave tequilana and kiwifruit . In a tissue taken from the interface between the peel and tuber, there existed bundles of raphides (with a length of 60–70 μm) within a crystal idioblast cell (Figure a), which was similar to the report of Kawasaki et al There existed raphides in both rehydrated starting material and blended yam, which were irritants to skin. For example, individual raphide was observed in starting material (before freeze-drying) (Figure b).…”

Section: Resultssupporting

confidence: 83%

Preparation of Nano/Submicrometer Yam and Its Benefits on Collagen Secretion from Skin Fibroblast Cells

Chiang

Chen

Yeh

2012

J. Agric. Food Chem.

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Nano/submicrometer-scaled yam particles have been prepared by using media-milling. The particle size of media-milled yam was confirmed by the laser light scattering method and scanning electron microscopy. Influences of media-milled yam on skin fibroblast cells (WS1) were evaluated. The size reduction did not significantly alter the proximate composition, and the presence of nanoparticles was not toxic to WS1 cells. The contents of bioactive compounds (diosgenin, stigmasterol, and β-sitosterol) were significantly increased by media-milling, which enhanced the secretion of hTGF-β and inhibited the formation of MMP-1. Thus, the collagen secretion from WS1 was significantly increased by size reduction. Diosgenin was employed as a positive control. Nevertheless, media-milled yam exhibited greater effects on WS1 cells than diosgenin. It appeared that both diosgenin and size reduction were helpful for enhancing the secretion of collagen by WS1 cells. In addition, the irritancy of yam was eliminated by media-milling.

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Section: Resultssupporting

confidence: 83%

Preparation of Nano/Submicrometer Yam and Its Benefits on Collagen Secretion from Skin Fibroblast Cells

Chiang

Chen

Yeh

2012

J. Agric. Food Chem.

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“…In Japanese yam (Dioscorea japonica Thunb. ), crystal cells were also observed in the cortex of the tuber (Kawasaki et al, 2004). These results support the compartmentalization of the inner structure of tuber postulated by Sharma (1974) and indicate that the part beneath the stele of tuber is a part of cortex.…”

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confidence: 89%

Dynamics of Amyloplast Sedimentation in Growing Yam Tubers and Its Possible Role in Graviperception

Kawasaki

Taniguchi

Miyake

2008

Plant Production Science

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“…Opening, most likely, occurs according to the same type as in tomato anthers [ 19 , 20 , 21 ]. For tomatoes in particular, as well as for the entire Solanaceae family and many other plants, the formation of calcium oxalate crystals is well studied [ 22 , 23 , 24 , 25 ]. Therefore, oxalates are found in specialized leaf cells, ideoblasts, in the cells of the crystalline anther parenchyma [ 20 , 21 ].…”

Section: Discussionmentioning

confidence: 99%

Formation of Unique Placental Seed Capsules in the Maturation Process of the Tomato Fruit

Chaban

Гулевич

Баранова

2022

IJMS

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The morphological and anatomical study of the seed formation features in a juicy tomato fruit was carried out. The ovules, which form on the placenta, have been shown to be gradually enveloped by the protrusions of placental tissue that arises simultaneously with them. As a result of this process, each seed is enclosed in an individual capsule. These seed capsules have been shown in vivo to be airtight and air-filled. Tomato seeds, as has been shown in this study, develop inside these capsules until the full maturity of the fruit and do not come into contact with the detached and moldered cells of the placenta protrusions, which convert into a gel (pulp). Using scanning electron microscopy, it was possible to reveal the details of a ribbon-like “pubescence” formation of the tomato seed, as well as to understand the mechanism of cracking of the outer layer cells in the seed coat, associated with the detection of calcium oxalate crystals in these cells. The unique outer layer of the tomato seed coat seems to play the role of a scaffold that maintains a constant volume of the protective capsule.

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Structural Changes and Fate of Crystalloplastids during Growth of Calcium Oxalate Crystal Idioblasts in Japanese Yam (Dioscorea japonica Thunb.) Tubers

Cited by 8 publications

References 19 publications

Preparation of Nano/Submicrometer Yam and Its Benefits on Collagen Secretion from Skin Fibroblast Cells

Preparation of Nano/Submicrometer Yam and Its Benefits on Collagen Secretion from Skin Fibroblast Cells

Dynamics of Amyloplast Sedimentation in Growing Yam Tubers and Its Possible Role in Graviperception

Formation of Unique Placental Seed Capsules in the Maturation Process of the Tomato Fruit

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